Sample <head> section:

For the examples (debug version): 

    <link rel="stylesheet" type="text/css" href="../../mfbase/ext/resources/css/ext-all.css" />

    <script type="text/javascript" src="../../mfbase/openlayers/lib/Firebug/firebug.js"></script>
    <script type="text/javascript" src="../../mfbase/openlayers/lib/OpenLayers.js"></script>

    <script type="text/javascript" src="../../mfbase/ext/adapter/ext/ext-base.js"></script>
    <script type="text/javascript" src="../../mfbase/ext/ext-all-debug.js"></script>

    <script type="text/javascript">
      // Because of a bug in Firefox 2 we need to specify the MapFish base path.
      // See https://bugzilla.mozilla.org/show_bug.cgi?id=351282
      var gMfLocation = "../../mfbase/mapfish/";
    </script>
    <script type="text/javascript" src="../../mfbase/mapfish/MapFish.js"></script>

For the demos (production version): 

    <link rel="stylesheet" type="text/css" href="../../mfbase/ext/resources/css/ext-all.css" />

    <script type="text/javascript" src="../../mfbase/ext/adapter/ext/ext-base.js"></script>
    <script type="text/javascript" src="../../mfbase/ext/ext-all.js"></script>

    <script type="text/javascript" src="../../mfbase/release/mapfish/MapFish.js"></script>